Stabilizza live YouTube/RTMP e fix crash rotazione mobile.

Pipeline YouTube con relay, overlay e publisher sync lato backend; fix GL pauseGlDuringRotation su Android per evitare crash in rotazione durante lo streaming Flutter.

Co-authored-by: Cursor <cursoragent@cursor.com>

mobile/lib/features/matches/matches_screen.dart

@@ -5,6 +5,7 @@ import 'package:intl/intl.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 import '../../app/theme.dart';
+import '../../core/config.dart';
 import '../../providers/auth_provider.dart';
 import '../../shared/api_client.dart';
 import '../../shared/models/match.dart';
@@ -64,7 +65,60 @@ class MatchesScreen extends ConsumerWidget {
         loading: () => const Center(
           child: CircularProgressIndicator(color: AppTheme.primaryRed),
         ),
-        error: (e, _) => Center(child: Text('Errore squadre: $e')),
+        error: (e, stack) {
+          final msg = e.toString();
+          final unauthorized = msg.contains('401');
+          final timeout = msg.contains('timeout') || msg.contains('Timeout');
+          final offline = timeout ||
+              msg.contains('SocketException') ||
+              msg.contains('Failed host lookup');
+          String title = 'Errore nel caricamento squadre';
+          String hint = 'Controlla Wi‑Fi o dati mobili e riprova.';
+          if (unauthorized) {
+            title = 'Sessione scaduta';
+            hint = 'Accedi di nuovo con email e password.';
+          } else if (offline) {
+            title = 'Server non raggiungibile';
+            hint = timeout
+                ? 'La connessione è troppo lenta o assente. Verifica la rete (serve almeno qualche Mbps).'
+                : 'Impossibile contattare ${AppConfig.apiBaseUrl}. Riprova tra poco.';
+          }
+          return Center(
+            child: Padding(
+              padding: const EdgeInsets.all(24),
+              child: Column(
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: [
+                  Text(
+                    title,
+                    style: theme.textTheme.titleMedium,
+                    textAlign: TextAlign.center,
+                  ),
+                  const SizedBox(height: 8),
+                  Text(
+                    hint,
+                    style: theme.textTheme.bodySmall,
+                    textAlign: TextAlign.center,
+                  ),
+                  const SizedBox(height: 16),
+                  if (unauthorized)
+                    FilledButton(
+                      onPressed: () {
+                        ref.read(authProvider.notifier).logout();
+                        context.go('/login');
+                      },
+                      child: const Text('VAI AL LOGIN'),
+                    )
+                  else
+                    TextButton(
+                      onPressed: () => ref.invalidate(teamsProvider),
+                      child: const Text('RIPROVA'),
+                    ),
+                ],
+              ),
+            ),
+          );
+        },
         data: (teams) {
           if (teams.isEmpty) {
             return NoTeamOnboarding(theme: theme);